Home / 3,877.51-5,351.04-2,109.13

Finding the Fourth Proportional to 3,877.51, 5,351.04 and 2,109.13

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Solution

The fourth proportional to 3,877.51, 5,351.04 and 2,109.13 is: 2,910.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,877.51 : 5,351.04 = 2,109.13 : x
  2. Step 2: Convert to fraction form
    3,877.51/5,351.04 = 2,109.13/x
  3. Step 3: Cross multiply
    3,877.51x = 5,351.04 × 2,109.13
  4. Step 4: Simplify right side
    3,877.51x = 11,286,039.00
  5. Step 5: Solve for x
    x = 11,286,039.00/3,877.51
  6. Step 6: Final answer
    x = 2,910.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.